X-Git-Url: http://dxcluster.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=perl%2FDXUtil.pm;h=c4abc15bef7021d76c2352f55278350f02b3e3c9;hb=c961a6af6d9aec8eba4d58803f890fc514a109cc;hp=868110ea36d6e7de266d4c7e28a704181787b276;hpb=77727aa5c288b8b34cb0e05cea45a367fa1f9b6c;p=spider.git

diff --git a/perl/DXUtil.pm b/perl/DXUtil.pm
index 868110ea..c4abc15b 100644
--- a/perl/DXUtil.pm
+++ b/perl/DXUtil.pm
@@ -13,11 +13,18 @@ use Carp;
 
 require Exporter;
 @ISA = qw(Exporter);
-@EXPORT = qw(atime ztime cldate cldatetime slat slong yesno promptf parray parraypairs
-             print_all_fields cltounix 
+@EXPORT = qw(atime ztime cldate cldatetime slat slong yesno promptf 
+			 parray parraypairs shellregex
+             print_all_fields cltounix iscallsign
             );
 
 @month = qw(Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec);
+%patmap = (
+		   '*' => '.*',
+		   '?' => '.',
+		   '[' => '[',
+		   ']' => ']'
+);
 
 # a full time for logging and other purposes
 sub atime
@@ -73,6 +80,7 @@ sub cltounix
 	return 0 unless $time =~ /^([012]\d)([012345]\d)Z$/;
 	$time = "$1:$2 +0000";
 	my $r = str2time("$date $time");
+	return $r unless $r;
 	return $r == -1 ? undef : $r;
 }
 
@@ -168,3 +176,20 @@ sub print_all_fields
 	return @out;
 }
 
+# generate a regex from a shell type expression 
+# see 'perl cookbook' 6.9
+sub shellregex
+{
+	my $in = shift;
+	$in =~ s{(.)} { $patmap{$1} || "\Q$1" }ge;
+	return '^' . $in . "\$";
+}
+
+# start an attempt at determining whether this string might be a callsign
+sub iscallsign
+{
+	my $call = shift;
+	return 1 if $call =~ /^\w+\d+/;
+	return 1 if $call =~ /^\d+\w+/;
+	return undef;
+}